(loosely) any of numerous small creeping animals with more or less slender, elongated bodies, and without limbs or with very short ones, including individuals of widely differing kinds, as earthworms, tapeworms, insect larvae, and adult forms of some insects.

3.

something resembling or suggesting a worm in appearance, movement, etc.

Old English wurm, variant of wyrm "serpent, dragon," also in later Old English "earthworm," from Proto-Germanic *wurmiz (cf. Old Saxon, Old High German, German wurm, Old Frisian and Dutch worm, Old Norse ormr, Gothic waurms "serpent, worm"), from PIE *wrmi-/*wrmo- "worm" (cf. Greek rhomos, Latin vermis "worm," Old Russian vermie "insects," Lithuanian varmas "insect, gnat"), possibly from root *wer- (3) "turn" (see versus).

The ancient category of these was much more extensive than the modern, scientific, one and included serpents, scorpions, maggots, and the supposed causes of certain diseases. For substitution of -o- for -u-, see come. As an insult meaning "abject, miserable person" it dates from Old English.

Any of various invertebrate animals having a soft, long body that is round or flattened and usually lacks limbs. The term worm is used variously to refer to the segmented worms (or annelids, such as the earthworm), roundworms (or nematodes), flatworms (or platyhelminths), and various other groups.

A destructive computer program that copies itself over and over until it fills all of the storage space on a computer's hard drive or on a network.

Our Living Language: Earthworms are one of many types of worms, including those of the flat and round species. Over a century ago, Charles Darwin spent 39 years studying earthworms and wrote The Formation of Vegetable Mould Through the Action of Worms with Observations on Their Habits, an entire book that described his research on earthworm behavior and intelligence and further explained how important earthworms are to agriculture. "Long before [the plow] existed," he wrote, "the land was, in fact, regularly plowed and still continues to be thus plowed by earthworms. It may be doubted whether there are many other animals which have played so important a part in the history of the world." Darwin was referring to the way that earthworms naturally mix and till soil, while both improving its structure and increasing its nutrients. As they tunnel in the soil, earthworms open channels that allow in air and water, improving drainage and easing the way for plants to send down roots; they also carry nutrients from deep soils to the surface. Earthworms eat plant material in the soil, decaying leaves, and leaf litter, and their own waste provides nourishment for plants and other organisms. Slime, a secretion of earthworms, contains nitrogen, an important plant nutrient. It is estimated that each year earthworms in one acre of land move 18 or more tons of soil.

networking, security (From "Tapeworm" in John Brunner's novel "The Shockwave Rider", via XEROX PARC) A program that propagates itself over a network, reproducing itself as it goes. Compare virus. Nowadays the term has negative connotations, as it is assumed that only crackers write worms. Perhaps the best-known example was the Great Worm. Compare Trojan horse. [Jargon File] (1996-09-17)

(1.) Heb. sas (Isa. 51:8), denotes the caterpillar of the clothes-moth. (2.) The manna bred worms (tola'im), but on the Sabbath there was not any worm (rimmah) therein (Ex. 16:20, 24). Here these words refer to caterpillars or larvae, which feed on corrupting matter. These two Hebrew words appear to be interchangeable (Job 25:6; Isa. 14:11). Tola'im in some places denotes the caterpillar (Deut. 28:39; Jonah 4:7), and rimmah, the larvae, as bred from putridity (Job 17:14; 21:26; 24:20). In Micah 7:17, where it is said, "They shall move out of their holes like worms," perhaps serpents or "creeping things," or as in the Revised Version, "crawling things," are meant. The word is used figuratively in Job 25:6; Ps. 22:6; Isa. 41:14; Mark 9:44, 46, 48; Isa. 66:24.